1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Law Incorporation [45]
3 years ago
12

Before experimental drugs can be brought to market, they must undergo many rigorous trials to ensure they deliver their medical

benefits effectively and safely. One method commonly used in this process is to compare the effect of a drug with that of a placebo in double-blind tests. Which of the following correctly describes a double-blind test?
a. The researchers apply two-layered blindfolds to the study participants so that they cannot see whether they are receiving the drug or a placebo.
b. Neither the researchers nor the study participants know who is receiving the drug and who is receiving the placebo.
c. The researchers know who is receiving the drug and who is receiving the placebo, but they do not know what the supposed effects of the drug should be.
d. The researchers do not know who receives the drug or the placebo, but the participants know and tell them later.
e. None of the above is correct.
Biology
1 answer:
SVETLANKA909090 [29]3 years ago
6 0

Answer:

b. Neither the researchers nor the study participants know who is receiving the drug and who is receiving the placebo.

Explanation:

In a double-blind test, there are two groups of participants: (1) people who are receiving the new drug and (2) people who are taking a placebo. Neither people from group (1) nor people from group (2) know what they are taking. Also, researchers recollect data from theses groups without knowing which person belongs to each group to avoid any "favoritism" caused by expected results.

You might be interested in
Which of the following correctly describes accessory organs participating in chemical digestion?
Helen [10]
Stomach contracting to mix foods with enzymes
8 0
3 years ago
What is allosteric regulation? a) In allosteric regulation, genes are expressed constitutively. b) In allosteric regulation, a s
andrew11 [14]

Answer:

b) In allosteric regulation, a small molecule binds to a large protein and causes it to change its shape and activity.

Explanation:

Allosteric regulation refers to the activity control of an enzyme by binding small molecules to regulatory sites on It. This binding causes an alteration of the protein conformation and consequently the shape of the active site and its catalytic activity are altered. Regulatory enzymes can act by either stimulating or inhibiting the activity of a protein.

8 0
3 years ago
In a protected grassland preserve, there are herds of antelope and zebra and a pride of fifteen lionesses with cubs. A conservat
vekshin1
This would cause the overpopulation in the grassland preserve. There would be too many antelopes and zebras that they would have to compete for survival. The food resources would run out for both species and cause a competition among every animal.
7 0
3 years ago
Read 2 more answers
A large glucose molecule requires facilitated diffusion, but an oxygen molecule does not
shusha [124]

Answer:

A large glucose molecule requires facilitated diffusion but an oxygen molecule does not is a semipermeable membrane

Explanation:

Have a nice day :)

6 0
3 years ago
Which type of note taking is shown in the example above?
Serjik [45]

Answer:

quotation

Explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • Suppose that rat liver expresses a protein called Yorfavase. This enzyme is composed of 192 amino acid residues, and thus the co
    12·1 answer
  • What is the relationship between the chemical reaction for photosynthesis and the chemical reaction for respiration
    12·1 answer
  • Hasan is a three-year-old boy who lives in dhaka, bangladesh. He is small for his age, has bowed legs, exhibits muscle weakness,
    13·1 answer
  • When a female bird chooses a mate because of his brightly colored feathers, this is an example of
    11·2 answers
  • Choose the best synonym to replace the underline word in the sentence below: These fossil fuels emit carbon dioxide into the air
    10·1 answer
  • Speciation without geographic isolation is called ________ speciation.
    8·1 answer
  • Seeds (dominant) and wrinkled seeds (recessive)
    8·1 answer
  • Define phototaxis!!!
    5·1 answer
  • A buried body of shale is subjected to differential stress, causing clay minerals to realign and produce slate. This is an examp
    8·1 answer
  • The molecular bonds between atoms are considered to be _____ in a food item, before you eat it.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!